i can see it from both sides as i used to have a dog that barked like yours and was reported by my neighbour, funny it was only reprted after we had a falling out but hey, and i am also in the situation where i live of having a dog barking for what seems like non stop, and sometimes ive heard it at 3 in the morning, there is nothing worse than it being quiet, as it is where i live, and then having a dog breaking the silence all the time, it is very annoying and gets on peoples nerves, especially as you say its alone from 7-3, neighbours youve asked say it does bark sometimes, are you sure they arent just being "kind" to you when actually it does get on there nerves, good luck whatever happens